ceiling. he says if they don't the u.s. faces a federal default and confusion in financial markets. >> the republicans can act responsibly and y amica' bills or put america through another economic crisis. >> obama says raising the debt limit is necessary for the government to meet its obligations. he said he's willing to compromise on cutting the budget deficit but not in exchange for increasing the debt ceiling. the u.s. government has reached a borrowing limit set by law but republicans continue to reject an increase without spending cuts in social security and other programs. now it's not the first time the u.s. has faced such a stand off. in the summer of 2011 the government and coness mained at odds over raising the limit until the last minute. the incident weighed down on share prices. it also prompted the first downgrade on u.s. government bonds. global car makers are showcasing their latest model at the 2013 international auto show in detroit. more than 50 new models are on display. t